Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Truss Physics Free.
Truss Physics v1.0.2 Beta
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Unity 5 compatible
Truss Physics is a high quality soft body simulation for a wide range of materials from jelly-like and springy to almost rigid but deformable.
+ Robust soft body simulation.
+ Breakable soft body constraints.
+ Interaction with rigid bodies.
+ Seamless Unity integration.
+ Tutorials and samples.
Visit project site for more information and evaluation copy.
The asset is still in development. Any bug reports and feature requests are welcome.